{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Chemical"], "input": "Following an oral glucose tolerance test , 20 individuals with normal glucose tolerance ( NGT ) and 20 IGT subjects were randomly selected from the ongoing PRAEDIAS prevention study in our department ."}
{"Chemical": ["glucose"]}